Lamp



E. A. KUEN.

LAMP.

APPLICATION FILED APR. 7, 1919. v 1A19fi62w atentedJune 6, 1922.

3 SHEETS-SHEET L E. A-. KUEN.

LAMP.

APPLICATION FILED APR-7,1919.

1,419,062. Patenteuune 6,1922.

3 SHEETSSHEET 2.

11111111111111) rill/1,111,011 \\\\\\\\v E. A. KUEN.

LAMP.

APPLICATION FILED APR. 7, 1919.

lAIQfiGZD Pat nte June 6, 1922.

3 SHEETS-SHEET 3.

UNHTEEZ stares rarest EUGENE A. KUEN, 0F CINCINNATI, OHIO, ASSIGNOR T0 THOMAS J. CORCOBAN, @F

CINCINNATI, OHIO.

LAMP.

il,4tll2 ti2.

, Application filed April 7,

T 0 (1H whom it may concern. Be it known that I, EUGENE A. Kenn, a citizen of the United States, residing at Cincinnati, in the county of Hamilton and State of Ohio, have invented certain new and useful Improvements in Lamps, of which the following is a specification.

Lamps of the character to which this invention relates usually employ a body, a reflector, and a closure, the closure comprising a transparent or translucent sheet known as a lens, throu h which the rays of light are projected. Eamps of this character are usuall employed as headlights, and are especial y useful on motor driven vehicles.

Objects of my invention are to provide novel clamping connections between the lamp-members; to provide means whereby ready assembling may be had; and to provide simple means whereby unintentional disarrangement of the relations of the lamp members is prevented; and the invention will be furtherreadily understood from the following description and claims, and from section on the line 6-6 of the drawings, inwhich latter:

Fig. 1 is a front elevation of my improved device. with parts of theclo'sure, the lens, and the reflector removed, for exposure of the interior parts.

Fig. 2 isa cross-section of the same, takenon the line 2-2 of Fi 1.

Fig. 3 is an enlarged sectional detail, taken on the line 33 of Fig. 2.

Fig. 4 is a cross-section detail taken on the line Jrl of Fig. 3.

Fig. 5 is a sectional detail taken on the line 5-5 of Fig. 3. V 4

Fig. 6 is a rear elevation 1(detaig, partly in 1g. Fig. 7 is a detail in perspective, showing a part of thebody and a part of the closure in separated relation, and showing the axial guidingmeans between the same.

Fig. 8 is a cross-sectlonal detail, showing a modification of my improved device.

Fig. 9 is a cross-sectional detail, showing asecond modification of my improved demac. 1

Fig. 10 is a rear elevation detail of the attaching plate for the, last-named modification. Y

Fig. 11 is a cross-sectional detail, partly in perspective, showing a third modification of my improved device.

- Fig. 12 is afront elevation detail, show- Specification of LettersPatent. f je gm m f (5919228 1919. serial No. 25am.

ing a fourth modification of my improved device.

F ig. 13 is a sectionof the same taken on the line 13 l3 of Fig. 12,-and,

Fig. 14 is a cross-section of the same, taken on the line l4i-l4 of Fig. 12. I

The body is exemplified at 11. It is shown of general parabolic form, and is provided at its front end with a substantially cylin-" drical wall 12, at the front end of which there is an inwardly extending annular flange 13. The flange may be formed integral with the body, or, if desired, may be on a ring, as shown in Fig. 11, in which the flange is shown at 13 extend1 ng integrally inward from an annular ring 14 secured in any suitable manner, as by soldering or brazing, to the inner surface tially cylindrical wall 12.

A. reflector 17, shown as a parabolic reflector, is received in the body. It is provided with a laterally outwardly extending annular flange 18, which coacts with the flange 13. The flange 18 is shown as at the rear end of a rearwardly projecting annular wall 19, projecting 'rearwardly from 'the front end of the reflector, for forming an annular bulge 20, in the front end of which there is an annular groove 21 for receiving an annular cushion 22. This annular cushion may bea string of fabric or a rubber ring let into the'groove.

A suitable lamp holding means, shown as an electric connector 25, 1s in the rear end of the reflector, being shown as in a thimble 26 fixed to the reflector, and is adjustable therein. in any suitable manner, not shown because well known. Electric conductors 3O A closure for the lainp is provided, shown as comprising a ring-member 40 and a transparent or translucent member el, which will hereinafter b referred to as a lens. lens is usualiy of glass. Clips 42 are se-' curedto the ring-member by screws 43 and press, against the lens to hold the latter inv place. The ring-member conforms to the This general shape of the outer portion of the body, for instance, the forwardly extending wall 12. While ,the ring-member and the parts of the body and reflector coacting therewith are shown and described as annular, it is obvious that other forms thereof are included within my invention within the scope of the appended claims.

The ring-member, in the present exempliflcation, comprises an outer member 4:4 having an inwardly extending flange 45 at its front portion, which is shown annular, and a wall it which is arranged to coact \viththe wall 1%, and is also shown annular. It may also comprise an inner member 17 which acts to brace the outer member and is fixedly secured thereto, as by soldering or brazing. lit aids in resisting the compression exerted by the tension-members hereinafter described. The inner member comprises a wall 18 to conform to the general shape of the outer peripheral edge of the lens, and. is shown annular. lit positions the lens.

W hen the parts are assembled, the flange 18 of the reflector coacts with the flange 1? of the body, as by being received thereon, and the inner face of the lens is received against the cushion-member 9.2, the flange 4:5 projecting inwardly preferably to slightly greater extent than being proximate thereto at the outer face of the lens.

, Means are provided for positioning the reflector on the body, for positioning the ring member with relation to the body, and for clamping the parts together in associated relations.

Thus the flange 13 is provided with cars 51, these cars being preferably struck up from the body of the metal of the flange, and having a space 52 thereunder between the ears and the planeof the flange 13, in which the flange 18 of the reflector is received. The flange of the reflector is provided with recesses 53 having angular dimensions preferably at least as large as the angular dimensions of the cars, so that, when assembling the parts, the flange of the reflector may be readily received past the outwardly extending portion of the cars by axial movement 'of the reflector with relation to the body, and then rotated, so that the flange of the reflector is received under the ears, between the ears and the flange of the body.

The cars and the walls of the recesses coact to center the reflector in the body.

The parts are clamped together by tension-members, shown as screws 56 in Figs. 1 to U 11 inclusive. The screw is received through an aperture 57 in the front wall 58 of the ring-member of the door or closure,

the inner member 47 of the ring-member, an aperture 61 in the flangelB on the reflector, and preferably through an aperture 62 in the flange the cushionmember, but

amper.

13 of the body. The ring-member may be of the cross-sectional form shown, or of other desirable cross-sectional form. The

screw-threaded end of the screw is received in the screw threaded bore of a nut 64s. The nut is fixed to the flange 13 in any suitable manner, being preferably soldered or brazed to its rear face. The head of the screw is preferably a countersunk head, that is to say, its rear face is tapered, and the wall of the hole 57 is correspondingly tapered, so that preferably the outer end-face only of the head of the screw which is preferably rounded, is in view when the parts are assembled.

The nut preferably has a tapered entrance end 85 in advance of the threaded portion of its bore, the entrance end being preferably unthreaded and spreading outwardly radially, and the apertures 60, 61, 62, larger than the diameter of the screw, so that the threaded end of the screw may be readily received therein and its threads readily connected with the threads of the nut. The threaded end of the screw is preferably split, as shown at 66, the split ends being slightly spread to press resiliently against the threaded wall of the nut to prevent unintentional unscrewing of the screw.

The nut may be secured to the flange by providing wardly extending hub 68, the outer end of which is spread or riveted over the wall of the aperture (32' in the flange 13, for fixing the nut in said hole, as shown in the modification illustrated in Fig. 8. The threaded bore of the nut 64: may be precededby a tapered entrance end 65 for the ready reception of the screw.

If desired, the nut may be formed by forming a plate 7 0 with a rearwardly struck annular portion 71, the front endof which is tapering, as shown at 72, and the rear end of which is a threaded bore, the plate being secured to the inner face of the flange the nut 64: with an integral out-' wil 1 (iii lllli 13 in suitable manner, as by brazing or soldering, this modification being shown in rigs. 9 and 10.

If desired, the annular portion 71 and the tapered portion 72 of the bore may have the walls thereof struck directly from the flange, as shown in the flange 13 of the modification illustrated in Fig. 11.

The reflector is provided with the open ing 61, through which} the screw is arranged to pass, the wall of the opening nearest the car 51, acting as a stop to prevent rotation of the reflector in reverse direction in orderto maintain its flange 18 under the ear, and to prevent unintentional removal or dropping of the reflector when removing the door or closure. A suitable number of the screws and ears may be employed, three of each being shown in alternate arrangement 'When this form is employed, nuts 79 arepreferably received over the forward threaded ends of the screws and the heads 4 of the screws are preferably providedwith right angular shoulders. The screws may, if desired, be. fixed to the body by having their heads fixed to the flange 13,'as by brazing or soldering. The bores of the nuts are tapered outwardly at their rear ends, as shown at 80, to be readily received over the threaded ends of the screws. The outer ends of the threaded bores of the nuts may beclosed and slotted, as shown at 81, if desired, "and provided with tapered shoulders 82 received against the ring-member.

When this form of tension member is employed,'it is also desirable to elongate the aperture 61 in the flange 18 of the reflector, so as to pemnit slight rotation of the reflector to place the wall of its recess 53 beyond the range of the ear 51, to permit removal of the reflector off the body. The

forwardly extending screws act to hold the reflector onthe bodyand prevent accidental removal of the same.

In orderto readily locate the holes in the ring-member and the connecting parts in the body axially with relation to each other, the body and the ring-member are provided with coacting means to position the same rotatively with relation to each other. These means are exemplified as lugs 86 struck radially from, the-outwardly extend-' ing wall 12 of the body, the rear wall 46 of the door beingprovided with coacting slots 87, the walls of which coact with the lugs for relatively locating the closure and body, but permitting relative movement between the closure' and body parallel with y the principal axis of the lamp, so as to permit clamping movement between the closure, the reflector and the body.

There is'preferably a slight space 88 between the forward end of each of the lugs 86 and the. forward end of the wall 12, so

as to permit the rear edge of the closure to bereceived over the forward end of the body, so as to center the' closure on the body, the closure being then rotated on the lugs until the latter are received in the slots 87, whereby the apertures and nuts or screws respectively in the closure and body register with each other, whereupon the closure is pushed axially toward the body. The movable parts of the tension-members may then be readily inserted and the samerotated for clamping the parts together. A suitable number of the lugs and slots is provided,

circumferences for preventing dust seeping" therebetween between the wall of the reflector and the body. F

Having thus fully described my invention, what ll claim'as new and desire to secure by Letters Patent, is z.

1. In a lamp, the combination of a body, a reflector, and a closure, tension members connecting said body reflector and closure, comprising coact-ing parts respectively on said body and said closure, positioning means between said reflector and said body, and positioning means between said closure and said body, to axially aline said coacting parts.

2. In a lamp, the combination of. a body, a reflector, said reflector provided with a recess, said body provided with an ear received through said recess, said ear and a wall of said recess arranged to position said reflector on said body, and said ear having a part projecting in front of said wall to axially position said reflector on said body, a closure, said, closure provided with a ring-member and a lens, a cushion-ring between said lens and said reflector, said body and said closure 3. In a lamp, the combination of a body having a substantially cylindrical wall at its forward end, a laterally inwardly extending annular flange at the forward portion of said wall, a substantially parabolic reflector the inner end of which is received in said body, said reflector havin a laterally outwardly extending annular ange received in front of said flange of said body; a closure comprising a ring-member and a lens, a cushionmember between said reflector and said lens, said ring-member comprising an inwardly extending flange received in front of said lens proximate to said cushion-member when said closure is assembled on said body, said ring-member provided with a rear wall coacting with said substantially cylindrical wall of said body, and screw-members conmeeting said ring-member with said flange of said body comprising rotatable 'means eX- posed outside said lamp for clamping said body, said reflector and said closure together with said cushioninember and said lens received between said flange of said ring-member and said reflector, said annular flanges of said body and said reflector provided with coacting ears and recesses therefor having valls to limit rotative movement between said reflector and said body, said flange of said reflector provided'with openings, and said screw-members coacting with the walls of said openings to limit rotative movement of said walls or said recesses away from said ears. 7

d. in a lamp, the combination of a body having a substantially cylindrical wall at its forward end, a laterally inwardly extending flange at the forward portion of said wall, a substantially prnboho reflector the inner end of which is received in said body, said reflector having a laterally outwardly extending annular flange received in front of said flange of said body, a closure comprising a ring-memb and lens, a cushionmember between said reflector and said lens, said ring-member comprising an inwardly extendin flange r ceived in front of said lens pro ate to said cushion-member when said closure is assembled on said body, said ring-member provided with. a wall coacting with said; substantially cylindrical wall of said body, and tension-members connecting said llllgdlltffllbfi'f with said flange of said body and received past said flange of said reflector, said torwardly extending wall of said body provided with ribs, and said rearwardly extending wall of said ring member of said closure provided with coasting notches, and the walls of said notches and said ribs coacting to fix rotative relation between said closure and said body. Y

5. lin a lamp, the combination of a body, a reflector and a closure, said reflector and said body provided with cocating positioning parts for positioning said reflector in sa1d body, and sa-idbody and closure provided with coacting guiding faces for rotative movement between said closure and body, and said body and closure provided with coacting lugs and recesses for arresting rotative movement between said closure and body and for guiding axial movement between the same.

6. In a lamp, the combination of a body, a

reflector and a closure, said reflector received in said body, and said closure and said body atvtheir proximate meeting edges provided with coacting guiding faces for rotative movement between said closure and said body, and said closure and said body provided with coacting lugs and recesses at points spaced from, said meeting edges to arrest said rotative movement and to guide axial movement between said closure and said body.

7. in a lamp, the combination of a body, a reflector and a closure, said reflector received in said body, and said closure and said body at their proximate meeting edges provided with coacting guiding faces for rotative movement between said closure and said body, and said closure and said body provided with coasting lugs and recesses at points spaced from said meeting edges to arrest said rotative movement and to guide axial movement between said closure and said body, and tension-members between said body and said closure to clamp said body, said reflector and said closure together.

in testimony whereof, it have hereunto signed my name in the presence or two sub scribing witnesses.

EUGENE it. KUEN.

l i itnessesz PAUL V. (Jonwornr, Trinnnsa M. dimes.

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